CN218365674U - Blanking device - Google Patents

Abstract

The application relates to a blanking device, which relates to the technical field of concrete production equipment and comprises a rack, a storage hopper arranged on the rack, a weighing hopper arranged on the rack and a conveyor belt rotatably arranged on the rack, wherein a recovery mechanism for recovering dust is arranged on the rack, the recovery mechanism comprises a corrugated pipe and a dust absorption assembly, and the corrugated pipe is detachably arranged on the storage hopper, extends to a feeding port of the weighing hopper and is used for preventing fine aggregate from splashing to air to form dust; the dust collection assembly is arranged on the rack and is positioned between the discharge port of the weighing hopper and the conveyor belt. This application can reduce the produced dust volume of unloading to reduced the harm of dust in the air to the staff health, the bellows can be dismantled simultaneously, is convenient for maintain or change.

Description

Blanking device

Technical Field

The application relates to the technical field of concrete production equipment, in particular to a blanking device.

Background

The concrete aggregate is a granular loose material which plays a role in a skeleton or filling in concrete, the concrete aggregate is divided into a coarse aggregate and a fine aggregate, the coarse aggregate refers to pebbles, broken stones and the like, the fine aggregate refers to natural sand, artificial sand and the like, and a concrete mixing plant needs to mix different kinds of aggregates together according to a preset formula. Three storehouse formula proportioning machines of commonly using among the prior art weigh and transport the mixer to different kinds of aggregate according to predetermined proportion, three storehouse formula proportioning machines are including the storage hopper that sets up from top to bottom respectively, hopper and conveyer belt weigh, the storage hopper is used for storing the aggregate, the aggregate in the storage hopper drops under the dead weight effect in the hopper of weighing, the aggregate in the hopper of weighing can be weighed, and when the aggregate in the hopper of weighing reaches predetermined weight, the discharge gate of storing the hopper is closed, the discharge gate of the hopper of weighing simultaneously is opened, the aggregate in the hopper of weighing drops under the dead weight effect on the conveyer belt, then the conveyer belt conveys the aggregate and stirs in the mixer.

When three storehouse formula proportioning machines carry out the counter weight transportation to fine aggregate, because there is certain distance between storage hopper and the hopper of weighing, between hopper and the conveyer belt of weighing, fine aggregate all has partial fine aggregate to splash to form the dust in the air when falling to the hopper of weighing, falling to the conveyer belt from the hopper of weighing from storage hopper, the dust is harmful to staff's health.

SUMMERY OF THE UTILITY MODEL

In order to reduce the harm of dust to the staff, this application provides a unloader.

The application provides a unloader adopts following technical scheme:

the utility model provides a blanking device, includes the frame, sets up storage hopper in the frame, sets up the hopper of weighing in the frame, rotates the conveyer belt that sets up in the frame, be provided with the recovery mechanism that is arranged in retrieving the fine aggregate in the air in the frame, it includes to retrieve the mechanism:

the corrugated pipe is detachably arranged on the storage hopper, extends to the feeding hole of the weighing hopper and is used for preventing fine aggregates from splashing into the air;

and the dust collection assembly is arranged on the rack and is positioned between the discharge port of the weighing hopper and the conveyor belt.

Through adopting above-mentioned technical scheme, open the storage hopper ejection of compact, the fine aggregate in the storage hopper gets into the hopper of weighing through the bellows, and the bellows blocks during fine aggregate splashes to the air, the hopper of weighing simultaneously weighs the aggregate in to the hopper of weighing, when the fine aggregate in the hopper of weighing reaches predetermined weight, close the storage hopper discharge gate, and open the hopper discharge gate of weighing, aggregate in the hopper of weighing drops on the conveyer belt, the dust that the dust absorption subassembly formed after dropping the conveyer belt to the aggregate, with this dust in having realized reducing the air, thereby the harm of dust in the air to staff's health has been reduced, the bellows can be dismantled simultaneously, be convenient for maintenance or change.

Optionally, the dust collection assembly comprises:

the dust collection box is arranged on the rack, and a dust collection cover is arranged on the dust collection box;

the fan, the fan sets up on the suction box and is used for inhaling the dust in the suction box, be provided with the filtering mechanism that filters the dust that gets into in the air before the fan and collect on the suction box.

Through adopting above-mentioned technical scheme, the fan starts for the dust gets into in the dust absorption case from the suction hood, and filtering mechanism filters the dust and collects after that, makes the dust be difficult to get into the fan, has realized collecting the dust in the air with this, thereby has reduced the dust in the air, has consequently reduced the harm of dust to staff's health, and the suction hood that the opening is great has improved dust collection efficiency, and filtering mechanism makes the fan not fragile simultaneously.

Optionally, the dust collection box is provided with a sliding hole, and the filtering mechanism comprises:

the filter frame is arranged on the sliding hole in a sliding mode and used for filtering and collecting dust;

and the positioning assembly is arranged on the dust collection box and is used for positioning the filter frame.

Through adopting above-mentioned technical scheme, the staff locks the locating component earlier, and the dust gets into the dust box back, and the dust falls on filtering the frame, and filtering the frame and blockking the dust and continue the whereabouts, and the air can pass through filtering the frame, when needs clear up filtering the frame, the staff unlocks the lock position subassembly, can slide out filtering the frame from the hole of sliding to this has realized filtering the dust and has collected, and the staff of being convenient for clears up the dust in the dust box, and filtering the frame simultaneously blocks the dust whereabouts, thereby realized protecting the fan.

Optionally, the positioning assembly includes:

the baffle is arranged on the filter frame and abuts against the dust collection box;

and the positioning screw penetrates through the baffle and is connected to the dust collection box through threads.

Through adopting above-mentioned technical scheme, the staff rotates set screw, make set screw pass baffle and threaded connection on the dust absorption case, the baffle is contradicted and is fixed a position the filter frame on the dust absorption case simultaneously, reverse rotation set screw again, make set screw keep away from the dust absorption case, the baffle is by the unblock promptly, the staff can be with the filter frame roll-off in the dust absorption case, fix a position the filter frame with this having realized, and the baffle blocks the slip hole that supplies the filter frame to slide on the dust absorption case, the probability of dust in the scattered air in the dust absorption case has been reduced, thereby the collection efficiency to the dust has been improved, the harm of dust in the air to staff's health has further been reduced.

Optionally, be provided with the conveying assembly that the aggregate transported in the control weighing hopper on the hopper of weighing, conveying assembly includes:

the conveying door is rotatably arranged on the weighing hopper through a rotating shaft and is used for controlling the conveying of the fine aggregate in the weighing hopper;

and the pushing cylinder is arranged on the weighing hopper and is electrically connected with the fan and used for pushing the conveying door to rotate.

By adopting the technical scheme, the pushing cylinder is contracted and the conveying door is pushed to rotate to a closed state, the conveying door stops fine aggregates in the weighing hopper from falling onto the conveying belt, the fan is also in a closed state when the pushing cylinder is contracted, and the fine aggregates in the storage hopper can be conveyed into the weighing hopper; when the weight of the fine aggregate in the weighing hopper reaches the preset weight, the pushing cylinder extends and pushes the conveying door to rotate to the open state, the fine aggregate in the weighing hopper can fall onto the conveying belt through the discharge port, the fan is started when the pushing cylinder extends, and the fine aggregate falls onto the conveying belt to form dust which is sucked into the dust collection box. The control of conveying the fine aggregate in the weighing hopper to the conveyor belt is realized, the fan can be automatically opened and closed, the probability of dust suction of workers when the fan is opened and closed is reduced, energy is saved, the environment is protected, and the dust collection efficiency is improved.

Optionally, an adding component for controlling fine aggregate addition is arranged on the storage hopper, and the adding component includes:

the adding door is arranged on the storage hopper in a sliding manner and is used for controlling fine aggregate in the storage hopper to be added into the weighing hopper;

and the adding cylinder is arranged on the storage hopper and is connected with the adding door.

By adopting the technical scheme, when the fine aggregate needs to be weighed, the adding cylinder is started and pushes the adding door to slide to an open state, and the fine aggregate in the storage hopper falls into the weighing hopper; when the weight of the fine aggregate in the weighing hopper reaches the preset weight, the adding air cylinder is started again and pushes the adding door to reversely slide to a closed state, and at the moment, the adding door blocks the fine aggregate in the storage hopper from falling into the weighing hopper. With this weight of the fine aggregate that has realized that the control adds in the hopper of weighing, and the delivery door can block the aggregate in the hopper of weighing and fall on the conveyer belt for the hopper of weighing can weigh fine aggregate according to predetermined weight, thereby has improved the off-the-shelf quality of concrete.

Optionally, be provided with the installation mechanism that is used for fixing a position the bellows on the storage hopper, installation mechanism includes:

the mounting ring is arranged on the storage hopper, and the corrugated pipe is sleeved on the mounting ring;

the plurality of arc plates are detachably arranged on the mounting ring and are pressed on the corrugated pipe;

and the mounting assemblies are respectively arranged on the arc plates and are used for positioning the arc plates.

By adopting the technical scheme, a worker firstly sleeves the corrugated pipe on the mounting ring, then presses the arc-shaped plates against the corrugated pipe and the mounting ring, locks the mounting assembly, and fixes the corrugated pipe on the storage hopper after mounting the plurality of arc-shaped plates one by the method; when the corrugated pipe needs to be maintained or replaced, the installation assembly is unlocked, then the arc-shaped plates are taken down, and after the plurality of arc-shaped plates are taken down one by the method, the corrugated pipe can be taken down from the storage hopper, so that the corrugated pipe is fixed, and can be disassembled, and the corrugated pipe is convenient to maintain or replace.

Optionally, the mounting assembly includes:

the mounting screw penetrates through the arc-shaped plate and is in threaded connection with the mounting ring;

the rotating disc is arranged on the mounting screw and is convenient to rotate, and the mounting screw is rotated by means of force.

By adopting the technical scheme, a worker rotates the rotating disc, so that the mounting screw penetrates through the arc-shaped plate and is in threaded connection with the mounting ring, and the arc-shaped plate is fixed; staff antiport rolling disc for the collar is kept away from to the mounting screw, can take off the arc from the collar, has realized fixing the arc with this.

In summary, the present application includes at least one of the following beneficial technical effects:

through opening the ejection of compact of storage hopper, the fine aggregate in the storage hopper gets into during the hopper of weighing through the bellows, and the bellows blocks during the fine aggregate splashes to the air, the aggregate of simultaneously weighing in the hopper is weighed to the hopper of weighing, when the fine aggregate in the hopper of weighing reaches predetermined weight, close the storage hopper discharge gate, and open the hopper discharge gate of weighing, aggregate in the hopper of weighing drops on the conveyer belt, dust collection assembly drops the aggregate and collects the dust that forms on the conveyer belt, with this dust in the reduction air has been realized, thereby the harm of dust in the air to staff's health has been reduced, the bellows can be dismantled simultaneously, be convenient for maintenance or change.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a perspective view of the suction assembly and filter mechanism of the present application, with the suction box shown in cross-section;

fig. 3 is an enlarged schematic view of a portion a in fig. 1.

Reference numerals are as follows: 1. a frame; 2. a storage hopper; 3. weighing a hopper; 4. a conveyor belt; 41. a drive motor; 5. a recovery mechanism; 51. a bellows; 6. a dust collection assembly; 61. a dust collection box; 611. a dust hood; 612. a sliding hole; 62. a fan; 7. a filtering mechanism; 71. a filter frame; 8. a positioning assembly; 81. a baffle plate; 82. a set screw; 9. a delivery assembly; 91. a delivery door; 911. rotating the block; 912. a rotating shaft; 92. a push cylinder; 10. adding a component; 101. an addition gate; 102. adding a cylinder; 11. an installation mechanism; 111. a mounting ring; 112. an arc-shaped plate; 12. mounting the component; 121. mounting screws; 122. and (6) rotating the disc.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses unloader.

Referring to fig. 1, unloader includes frame 1, fixed mounting is in storage hopper 2 in frame 1, fixed mounting is in frame 1 and be located storage hopper 2 under weighing hopper 3, rotate and install in frame 1 and be located weighing hopper 3 under conveyer belt 4, storage hopper 2 and the upper and lower surface of weighing hopper 3 are equallyd divide simultaneously and have do not seted up feed inlet and discharge gate, and storage hopper 2 all is the shape of radius frustum with the hopper 3 of weighing, and the hopper 3 of weighing can weigh the fine aggregate in the hopper 3 of weighing, be provided with recovery mechanism 5 in the frame 1, recovery mechanism 5 is used for absorbing the dust.

Referring to fig. 1, rotate on the frame 1 and install a plurality of driving rollers, and 4 covers of conveyer belt are established on a plurality of driving rollers, and fixed mounting has driving motor 41 on the frame 1 simultaneously, and driving motor 41 output shaft is connected with the driving roller and is used for driving the driving roller and rotates.

Referring to fig. 1 and 2, the recycling mechanism 5 includes a corrugated pipe 51 and a dust suction assembly 6, the corrugated pipe 51 is detachably and vertically installed on the outer side wall of the storage hopper 2, the axis of the corrugated pipe 51 coincides with the axis of the discharge port of the storage hopper 2, meanwhile, the corrugated pipe 51 vertically extends to the feed port of the weighing hopper 3, a positioning assembly 8 is arranged on the weighing hopper 3, and the positioning assembly 8 is used for positioning the corrugated pipe 51.

Referring to fig. 2 and 3, the positioning assembly 8 includes a mounting ring 111, a plurality of arc plates 112 and a plurality of mounting assemblies 12, the mounting ring 111 is fixedly mounted on the outer side wall of the storage hopper 2, the axis of the mounting ring 111 coincides with the axis of the discharge port of the storage hopper 2, meanwhile, the corrugated pipe 51 is vertically sleeved on the mounting ring 111, and the upper surface of the mounting ring 111 is located above the corrugated pipe 51; the plurality of arc-shaped plates 112 are tightly propped against the mounting ring 111, the plurality of arc-shaped plates 112 are matched with the mounting ring 111 to clamp the corrugated pipe 51, meanwhile, the side walls of two adjacent arc-shaped plates 112 are propped together, and the upper surfaces of the plurality of arc-shaped plates 112 are positioned on the same horizontal plane; the plurality of mounting assemblies 12 are all disposed on the arc-shaped plate 112, and the plurality of mounting assemblies 12 respectively correspond to the plurality of arc-shaped plates 112 one by one and are used for positioning the plurality of arc-shaped plates 112.

Referring to fig. 3, the mounting assembly 12 includes a mounting screw 121 and a rotating disc 122, the mounting screw 121 passes through the arc plate 112, and the mounting screw 121 is screwed on the mounting ring 111; the rotating disc 122 is fixedly installed on an end of the installation screw 121 far away from the installation ring 111, and the rotating disc 122 facilitates force assistance when the installation screw 121 is rotated.

Referring to fig. 1 and 3, an adding component 10 is disposed on the storage hopper 2, and the adding component 10 is used for controlling the fine aggregate in the storage hopper 2 to pass through the discharge hole of the storage hopper 2, so as to add the fine aggregate in the storage hopper 2 into the weighing hopper 3.

Referring to fig. 1 and 3, add subassembly 10 including adding door 101 and adding cylinder 102, add door 101 horizontal slip and wear to establish on storage hopper 2, and the top view semicircular in shape of adding door 101, the lower surface that adds door 101 simultaneously is located bellows 51 directly over, and add door 101 and be provided with two and slip opposite direction, two add door 101 and can block storage hopper 2 discharge gate when conflicting together, two add door 101 when no longer conflicting together, the fine aggregate in the storage hopper 2 can pass through the discharge gate and fall in weighing hopper 3.

Referring to fig. 1 and 3, moving blocks 103 are vertically and fixedly mounted on the side walls of two adding doors 101, the two moving blocks 103 are located outside the storage hopper 2 all the time, an adding cylinder 102 is a double-headed cylinder, the double-headed cylinder is horizontally and fixedly mounted on the outer side wall of the storage hopper 2, two piston rods of the double-headed cylinder are respectively and fixedly connected to the side walls of the two moving blocks 103, and the double-headed cylinder starts to drive the two moving blocks 103 to move in the opposite direction.

Referring to fig. 1, a conveying assembly 9 is arranged on the weighing hopper 3, and the conveying assembly 9 is used for controlling the fine aggregate in the weighing hopper 3 to pass through the weighing hopper 3, so as to realize the transportation of the fine aggregate in the weighing hopper 3 onto the conveyor belt 4.

Referring to fig. 1, the conveying assembly 9 includes a conveying door 91 and a pushing cylinder 92, the conveying door 91 is rotatably installed on the outer side wall of the weighing hopper 3, a vertical rotating block 911 is fixedly installed on the upper surface of one end, opposite to the conveying door 91, of the conveying door 91, two installing blocks 31 are fixedly installed on two outer side walls, opposite to the two outer side walls, of the weighing hopper 3, and a rotating shaft 912 is fixedly installed on the two opposite side walls of the two installing blocks 31, and the tops of the two rotating blocks 911 are rotatably installed on the two rotating shafts 912 respectively.

Referring to fig. 1, fixed mounting has the locating piece on weighing hopper 3's the lateral wall, and the locating piece is located the top of turning block 911, the one end rotation of promoting cylinder 92 simultaneously is installed on the locating piece, and promote cylinder 92 piston rod and carry door 91 lateral wall to rotate and be connected, carry door 91 and promote cylinder 92 simultaneously and all be provided with two, and two promotion cylinders 92 start to drive two transport door 91 antiport respectively, when two promotion cylinder 92 piston rods extend, two are carried door 91 and are close to each other and can conflict together, and can block weighing hopper 3 discharge gate when two are carried door 91 conflict together, and when two promote cylinder 92 piston rod contractions, two are carried door 91 and are kept away from each other and no longer contradict together, the fine aggregate in the weighing hopper 3 can be followed weighing hopper 3 discharge gate and dropped on conveyer belt 4.

Referring to fig. 1 and 2, the dust collection assembly 6 is arranged on the frame 1 and between the weighing hopper 3 and the conveyor belt 4, the dust collection assembly 6 includes a dust collection box 61 and a fan 62, the dust collection box 61 is fixedly mounted on the frame 1, a dust collection cover 611 is fixedly mounted on the dust collection box 61, the dust collection cover 611 is located between the weighing hopper 3 and the conveyor belt 4, and the dust collection cover 611 is used for sucking dust formed in the process that aggregate falls onto the conveyor belt 4 into the dust collection box 61; fan 62 fixed mounting is on the dust suction box 61 lateral wall, and fan 62 starts and to inhale the dust in the dust suction box 61, fixed mounting has the control panel of controlling fan 62 and the start-up of push cylinder 92 respectively on the frame 1, realize with this that fan 62 is connected with push cylinder 92 electricity, and fan 62 opens when push cylinder 92 contracts, fan 62 closes when push cylinder 92 extends, be provided with filter mechanism 7 on the dust suction box 61 simultaneously, and filter mechanism 7 is used for filtering the collection to the dust in the dust suction box 61, filter mechanism 7 can also block the dust and get into fan 62.

Referring to fig. 2, the filtering mechanism 7 includes a filtering frame 71 and a positioning assembly 8, a sliding hole 612 is formed in a side wall of the dust collection box 61, the filtering frame 71 is horizontally slidably mounted on the sliding hole 612, the filtering frame 71 is located above the fan 62, and the filtering frame 71 is used for filtering and collecting dust in the dust collection box 61 and blocking the dust from entering the fan 62; the positioning assembly 8 is disposed on the dust box 61, and the positioning assembly 8 is used for positioning the filter frame 71.

Referring to fig. 2, the positioning assembly 8 includes a baffle 81 and a positioning screw 82, the baffle 81 is fixedly mounted on the side wall of the filter frame 71, the baffle 81 abuts against the outer side wall of the dust collection box 61, and the baffle 81 can block the sliding hole 612; the positioning screw 82 passes through the baffle 81 and is screwed to the dust box 61, and the positioning screw 82 is used for positioning the baffle 81.

The working principle of the embodiment of the application is as follows:

add cylinder 102 and extend and drive two and add door 101 and keep away from each other, the fine aggregate in the storage hopper 2 passes through the discharge gate of storage hopper 2 and falls in weighing hopper 3, and bellows 51 blocks during the fine aggregate splashes the air, when needs maintain or change bellows 51, a plurality of installation component 12 of staff unblock, can take off a plurality of arcs 112 and bellows 51 respectively, during installation bellows 51, establish bellows 51 cover on collar 111 earlier, then install the arc 112 on collar 111, relocking locating component 8, collar 111 is fixed promptly.

When the weight of the fine aggregate in the weighing hopper 3 reaches the predetermined weight, the adding cylinder 102 contracts to drive the two adding doors 101 to be close to each other, when the discharge port of the storage hopper 2 is blocked by the two adding doors 101, the two pushing cylinders 92 are started and respectively drive the two conveying doors 91 to rotate, so that the two conveying doors 91 are away from each other, the fine aggregate in the weighing hopper 3 passes through the discharge port of the weighing hopper 3 and falls onto the conveying belt 4, meanwhile, the fan 62 is started, and dust between the discharge port of the weighing hopper 3 and the conveying belt 4 is sucked into the dust suction box 61.

The filter frame 71 filters and collects dust in the dust box 61, when the dust on the filter frame 71 needs to be cleaned, the positioning screw 82 is rotated, the positioning screw 82 is far away from the dust box 61, the filter frame 71 can slide out of the dust box 61, and accordingly dust in the air is reduced, harm of the dust in the air to bodies of workers is reduced, and meanwhile the corrugated pipe 51 can be detached to facilitate maintenance or replacement.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a blanking device, includes frame (1), sets up storage hopper (2) in frame (1), sets up weighing hopper (3) in frame (1), rotates conveyer belt (4) of setting in frame (1), its characterized in that: be provided with recovery mechanism (5) that are used for retrieving the dust on frame (1), it includes to retrieve mechanism (5):

the corrugated pipe (51), the corrugated pipe (51) is detachably arranged on the storage hopper (2) and extends to the feeding hole of the weighing hopper (3) and is used for preventing fine aggregates from splashing into the air to form dust;

and the dust collection assembly (6) is arranged on the rack (1) and is positioned between the discharge hole of the weighing hopper (3) and the conveyor belt (4).

2. A blanking unit according to claim 1, characterized in that: the dust collection assembly (6) comprises:

the dust collection box (61), the dust collection box (61) is arranged on the rack (1), and a dust collection cover (611) is arranged on the dust collection box (61);

fan (62), fan (62) set up on dust collection box (61) and be used for inhaling the dust in dust collection box (61), be provided with on dust collection box (61) and filter mechanism (7) that filter the dust that gets into in fan (62) front air and collect.

3. A blanking unit according to claim 2, characterized in that: seted up slip hole (612) on dust collection box (61), filtering mechanism (7) include:

the filter frame (71), the filter frame (71) is arranged on the sliding hole (612) in a sliding mode and is used for filtering and collecting dust;

the positioning assembly (8) is arranged on the dust collection box (61) and used for positioning the filter frame (71).

4. A blanking unit according to claim 3, characterized in that: the positioning assembly (8) comprises:

the baffle (81) is arranged on the filter frame (71) and abutted against the dust collection box (61);

the positioning screw (82) penetrates through the baffle plate (81) and is in threaded connection with the dust collection box (61).

5. A blanking unit according to claim 2, characterized in that: the conveying assembly (9) that is provided with aggregate and transports in the control weighing hopper on weighing hopper (3), conveying assembly (9) include:

the conveying door (91) is rotatably arranged on the weighing hopper (3) through a rotating shaft and is used for controlling the conveying of the aggregates in the weighing hopper (3);

the pushing air cylinder (92) is rotationally arranged on the weighing hopper (3), is electrically connected with the fan (62) and is used for pushing the conveying door (91) to rotate.

6. A blanking unit according to claim 5, characterized in that: be provided with on storage hopper (2) and control addition subassembly (10) that aggregate added, add subassembly (10) and include:

the adding door (101) is arranged on the storage hopper (2) in a sliding mode, and is used for controlling aggregate in the storage hopper (2) to be added into the weighing hopper (3);

an addition cylinder (102), wherein the addition cylinder (102) is arranged on the storage hopper (2) and is connected with the addition door (101).

7. A blanking unit according to claim 1, characterized in that: be provided with on storage hopper (2) and be used for carrying out installation mechanism (11) fixed a position bellows (51), installation mechanism (11) includes:

the mounting ring (111), the mounting ring (111) is arranged on the storage hopper (2), and the corrugated pipe (51) is sleeved on the mounting ring (111);

the corrugated pipe comprises a plurality of arc-shaped plates (112), wherein the arc-shaped plates (112) are detachably arranged on a mounting ring (111) and are pressed on the corrugated pipe (51) in a propping manner;

the mounting device comprises a plurality of mounting assemblies (12), wherein the mounting assemblies (12) are respectively arranged on a plurality of arc-shaped plates (112) and are used for positioning the arc-shaped plates (112).

8. The blanking device according to claim 7, characterized in that: the mounting assembly (12) comprises:

the mounting screw (121), the said mounting screw (121) passes the arcuate plate (112) and is screwed on the mounting ring (111);

the rotating disc (122) is arranged on the mounting screw (121) and is convenient to use force when the mounting screw (121) is rotated.

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